For previous attempts at a faster tsc, but in rust, see: 1. https://github.com/d...

smarx007 · 2025-03-11T22:29:42 1741732182

I think Deno and Bun are the two successful attempts at a faster tsc :)

keturakis · 2025-03-11T22:31:33 1741732293

Both Deno and Bun still use current tsc for type checking

madjam002 · 2025-03-11T22:38:02 1741732682

They just strip types and don’t do any type checking

Cthulhu_ · 2025-03-12T08:48:45 1741769325

Those are runtimes primarily, not compilers/type checkers. Likewise, TSC is not a TS runtime.

smarx007 · 2025-03-12T19:53:13 1741809193

Well, of course. But TSC output (transpiled JS source code) is then run by a JS runtime like Node that has a VM like V8 that makes an internal representation for the JS code. Using Bun or Deno allows you to go to a VM IR from the TypeScript directly without a need for TSC transpilation into JS first.

But as @keturakis pointed out (thanks!), Deno/Bun still rely on TSC, which I was not aware of.

morcus · 2025-03-13T12:36:55 1741869415

Bun doesn't even support a way to check types, just remove them.

> Note — Similar to other build tools, Bun does not typecheck the files. Use tsc (the official TypeScript CLI) if you're looking to catch static type errors.